The Castle of Cabra was raised, within the walled enclosure in the North West of the present town, on a spot high enough to overlook the whole town. It is said that it had a central square surrounded by a strong wall with eighteen towers where eight or ten thousand men could march. At present, most of what remains, it is enclosed within the constructions of the present School of the Escolapias. Among the constructions we have been able to locate the wall, of which something more than half still remains and to track the rest until we were able to determine, quite accurately, the plant of the enclosure which must have been quadrangular, of about 76x47m. The thickness of the walls is about two meters and sixty centimetres, approximately. The fact that the rest of the walls- and possibly of towers are surrounded by modern constructions hinders their thorough study.
As far as the towers are concerned, we can say that two of them are well known, plus the location of other two, that were to the sides of the present front door to the enclosure. In the centre of the East wall and half way out is the tower of Homage. It is almost square shaped and it is more than twenty meters high. At about eleven meter above ground level there is a squared chamber with an eight sided vault ceiling with tubes in the angles. The other tower is located in the northwest angle. It is of squared plant, with the angle that looks to the interior of the chamfered enclosure. The lower part is massive and in the upper part there is a chamber with a barrel vault. It still keeps about ten meters of its height and its maximum surface on the plant is 6.5×6.3m.
Of the other two acknowledged towers there only remain their foundations upon which modern constructions have risen.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.